<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Title</title>
</head>
<body>

</body>
<script>
	var obj = Object.create({_bookName:null},{
		bookName:{
			get:function(){
				return "《"+this._bookName+"》";
			},
			set:function(v){
				this.__proto__._bookName = v;
			}
		}
	});
	
	obj.bookName = "天龙八部";
	console.log(obj.bookName);
	obj.bookName = "倚天屠龙记";
	console.log(obj.bookName);
	
</script>
</html>